Allulose: what it is, how it works, and who it's for

Allulose is a rare sugar that occurs naturally in figs, raisins and maple syrup. It's about 70% as sweet as table sugar, carries roughly 0.2 - 0.4 calories per gram, and passes through the body largely unmetabolised, so it doesn't raise blood glucose or insulin. It cooks, browns and dissolves just like sugar.

That last sentence is the reason allulose exists as a commercial ingredient. Plenty of sweeteners are sweet. Very few behave like sugar once heat, water and time get involved.

This guide covers what allulose is, what the human research actually found, where the evidence is thin, what it does in a kadhai and an oven, and where it sits against every other sweetener you can buy in India. Why is it the possibly the best sweetener to be ever found.

What is allulose?

Allulose (also called D-allulose or D-psicose) is a monosaccharide with the same chemical formula as fructose and glucose, C6H12O6, arranged differently. That structural difference is everything. Your body absorbs it but has almost no enzymes to break it down, so most of it leaves intact through urine within 24 hours.

It's classified as a rare sugar because it exists in nature in tiny quantities. Wheat, brown sugar, maple syrup, figs and raisins all contain traces of it. Nobody was ever going to extract a kilo of sweetener from a bowl of figs, which is why it stayed a laboratory curiosity for decades.

It is a sugar, chemically. It just doesn't act like one inside you. Roughly 70% of an ingested dose is absorbed in the small intestine and excreted unchanged, according to the International Food Information Council. The rest reaches the colon.

Two things follow from that. It delivers almost no energy. And the fraction that reaches the colon is what sets the dose limits we'll get to later.

How is allulose made, and is it natural?

Commercial allulose is made by taking fructose (usually from corn or raisins) and converting it with an enzyme into its mirror-image sugar. The enzyme does one job: it flips a single carbon. No chemical synthesis, no petroleum feedstock, no artificial sweetener chemistry.

The word "natural" does real work in this category, so let's be precise about it. Allulose is a naturally occurring sugar. The commercial version is produced through enzymatic conversion, the same broad class of process that gives you cheese, yoghurt, vinegar and most vitamin supplements.

It sits in a different bucket from sucralose or aspartame, which are synthesised molecules that don't exist in food. And it's a different bucket again from erythritol and xylitol, which are sugar alcohols, usually fermented from glucose.

If your test for "natural" is "occurs in food and is made without synthetic chemistry", allulose passes. If your test is "picked off a plant and ground up", almost nothing in the sweetener aisle passes, including stevia extract and monk fruit extract.

How sweet is allulose compared to sugar?

Allulose is about 70% as sweet as table sugar. To match the sweetness of 100g of sugar you'd need roughly 130g to 140g of the pure powder. It has no bulk penalty in return, so a cup of it is close to a cup of sugar in volume and behaviour.

That 70% figure is the single most misunderstood number in this category, and it cuts both ways.

The upside: sweetness intensity is only half of what "tastes like sugar" means. The other half is how the sweetness arrives and how it leaves. Allulose has a clean onset, a rounded body and a short finish. It has no cooling effect in the mouth, which is the giveaway with erythritol, and no lingering herbal note, which is the giveaway with stevia.

The downside: used alone, it costs you 30% of your sweetness. You either accept a less sweet result or you use a third more product. At the price it commands, using a third more product is a real cost.

This is the exact problem that makes a blend worth building, and we'll come back to it.

Does allulose raise blood sugar or insulin?

No. Human trials consistently find allulose does not raise postprandial blood glucose or insulin, and several find it lowers the glucose spike from a meal eaten alongside it. A 2023 meta-analysis in PLOS ONE pooling 8 experiments and 145 participants found 5g and 10g doses both reduced the post-meal glucose curve.

The evidence here is better than most people assume, so it's worth naming the actual studies.

Tani and colleagues published that 2023 systematic review and meta-analysis in PLOS ONE on healthy adults. The effect sizes were small (standardised mean difference of -0.26 to -0.28) but consistent, working out to roughly a 13% to 14% reduction in the incremental area under the glucose curve.

For people already living with type 2 diabetes, Ayesh and colleagues published a 2024 meta-analysis in Metabolism Open covering 6 randomised controlled trials and 126 participants. Postprandial glucose fell significantly. Time above range fell significantly. Fasting plasma glucose didn't move, and the drop in insulin area under the curve pointed the right way without reaching statistical significance.

Read those two together and the honest summary is this. Allulose has a glycemic index of zero and doesn't spike you. It also appears to slightly blunt the spike from whatever you eat with it.

Some of the interest in allulose right now is about GLP-1, the incretin hormone behind the current generation of weight-loss drugs. Animal work found it stimulates GLP-1 release in rats. Human data on that specific question is thin. We've written separately on what the allulose and GLP-1 research does and doesn't show, and the short version is that it's a promising signal.

How many calories does allulose have?

Allulose contains roughly 0.2 - 0.4 calories per gram, less than a tenth of sugar's 4 calories per gram. The US FDA formally allows 0.4 kcal/g on nutrition labels, and permits it to be excluded from both the total sugars and added sugars lines, though it still counts inside total carbohydrate.

That labelling decision, issued in the FDA's final guidance on allulose, is why you now see American products advertising zero grams of sugar while listing it in the ingredients. It looks like a loophole. It isn't. The regulator reviewed the metabolic data and concluded that counting it as sugar would mislead consumers, because the body doesn't treat it as one.

We've broken down that decision and what it means for label reading in a separate piece on the FDA's allulose classification.

One practical note. Net carbs on a keto diet: it's generally subtracted, because it's absorbed and excreted rather than metabolised. Check the label, since different brands count it differently.

Is allulose safe?

Allulose has four separate GRAS notifications accepted by the US FDA (2012, 2014, 2017 and 2020), and is approved in Japan, South Korea, Australia and New Zealand, china, Singapore, Mexico and India. It is not approved in the European Union. The human safety record at normal doses is good.

What the regulators have said

The FDA route is GRAS, which is a manufacturer-led safety determination that the agency reviews and can question. Four have gone through without objection. The US also allows the 0.4 kcal/g figure and the added-sugars exclusion, which are downstream of accepting the metabolic data.

FSANZ approved D-allulose as a novel food in Australia and New Zealand in 2024. Japan and South Korea, where most of the world's supply is produced, have permitted it for years.

The European Food Safety Authority is the outlier and deserves a straight explanation, because "banned in Europe" gets thrown around a lot. In June 2025, the EFSA Panel on Nutrition, Novel Foods and Food Allergens concluded that the safety of D-allulose could not be established.

Read the opinion and the reason is administrative. The applicant didn't supply requested data on identity, production process, proposed use levels, genotoxicity and human safety, despite repeated contact. EFSA found an incomplete dossier and closed the file.

That distinction matters and we're not going to blur it in either direction. An incomplete dossier is not a clean bill of health either. It means one of the world's strictest regulators has not yet seen enough to sign off.

Here's the position we hold. Allulose has a better metabolic profile and a cleaner regulatory record than most sweeteners on an Indian shelf, and the honest evidence gap is duration, not signal. If you're pregnant, breastfeeding, buying for a child, or managing a condition with a clinician, ask the clinician.

Allulose is also why a pack can carry a sugar claim that another pack can't. If you want the thresholds themselves, we've set out what sugar-free legally means in India and how that differs from no added sugar.

What are the side effects of allulose, and at what dose?

Allulose has no toxicity linked to it and no serious side effects. The one thing to know is that large amounts can upset your stomach. A 2018 trial in Nutrients found healthy adults comfortably handled up to 0.4g per kg of body weight in one sitting and 0.9g per kg across a day. For a 60kg adult, that's 24g at once and 54g daily.

Han and colleagues ran that tolerance trial in Nutrients (2018), and the numbers are specific enough to be useful:

Those thresholds are generous. The trial only saw real discomfort once it pushed past them, at 0.5g/kg in a single sitting or 1.0g/kg across a day.

To put 24g in context, that's roughly 5 teaspoons of the pure powder in one go and 54g daily means 11 teaspoons in a day.

This is also why blends matter practically, not just for taste. A blend of monkfruit and allulose is perfect because the monk fruit is carrying part of the sweetness load.

If you're sensitive, start with half of what you think you need and build up over a week.

What else does the research say allulose does?

Beyond blood sugar, allulose has been studied for body fat, liver fat and tooth decay. A 12-week study of 121 adults found less body fat on the higher dose. The teeth results look good. Most of the other exciting findings come from mice, so treat those as early signs.

On body fat, Choi and colleagues gave 121 Korean adults either allulose or a dummy powder for 12 weeks and published the results in Nutrients in 2018. The group taking 7g twice a day ended up with a lower BMI and less belly fat than the group on the dummy. The researchers were careful to call it a first look, partly because they measured body fat with a bathroom-scale style device instead of a proper body scan.

On teeth, cavities happen when bacteria in your mouth feed on sugar and make acid, and that acid eats enamel. A 2025 study in JADA Foundational Science measured it. Sugar dragged the mouth down to pH 3.5, deep into the danger zone, while allulose only reached 5.4 and settled back at 5.7.

Two catches came with that result. Allulose won't protect you from sugar you eat later. And the researchers flagged a possible risk to exposed tooth roots in older people with receding gums.

Now the bit most articles skip. A 2022 review in the British Journal of Nutrition points out that mouse studies use amounts no person could swallow, because much above 30g upsets your stomach. So the dramatic mouse results on liver fat and weight don't carry over to a few spoons in your chai.

Which is why we won't tell you our sweetener does any of this. Allulose has a glycemic index of zero and almost no calories, and that's reason enough to use it. The rest is research worth watching.

How does allulose behave in cooking and baking?

Allulose behaves more like sugar in the kitchen than any other zero-calorie sweetener. It dissolves fully, holds moisture, browns through the Maillard reaction, and caramelises. It also browns faster than sugar and lowers the freezing point, so bakers usually drop the oven temperature by about 15°C and watch the edges.

The behaviours worth knowing:

• It browns early. Allulose caramelises at a lower temperature than sucrose. Cookies and cakes colour before they're cooked through. Drop the temperature, extend the time.
• It holds water. Baked goods stay softer for longer, which is good for cakes and awkward for anything meant to be crisp.
• It doesn't crystallise. No hard crack, no brittle. Fudge and caramel stay soft.
• It lowers freezing point. Ice cream and kulfi made this way scoop straight from the freezer instead of setting like a brick. This is a genuine advantage over sugar.
• It's heat stable. Unlike some high-intensity sweeteners, it survives Indian cooking temperatures without breaking down or turning bitter.

For Indian applications specifically (halwa, kheer, mithai, chai, filter coffee), the bulk and moisture behaviour is what decides whether a swap works. A kheer needs body. A besan laddoo needs something that binds. High-intensity sweeteners used alone give you sweetness and nothing else, which is why a laddoo made with pure stevia falls apart.

Our guide to baking and Indian sweets with allulose has the ratios and the temperature adjustments per application.

How does allulose compare to other sweeteners?

Allulose beats every common alternative on taste and behaviour, and loses to all of them on price (but its price is coming down fast as its production is ramping up). Stevia and monk fruit are far sweeter per gram and cheaper per serving but bring no bulk. Erythritol brings bulk but a cooling effect and an open cardiovascular risk. Sugar alcohols are cheaper and much rougher on the gut.

Two rows deserve more than a table cell.

Erythritol. It's the most common bulking agent in Indian "monk fruit" sweeteners, often making up 95% or more of the pack.

In 2023, Witkowski and colleagues published a study in Nature Medicine across cohorts of 1,157, 2,149 and 833 patients finding that higher circulating erythritol was associated with major adverse cardiovascular events, with hazard ratios of 1.80 and 2.21 comparing highest to lowest quartiles. In vitro and in vivo work in the same paper found erythritol increased platelet reactivity and clot formation.

Cleveland Clinic published follow-up work in 2024 pointing the same direction.

Jaggery. Included because it comes up constantly in India. Jaggery is unrefined sugar, with trace minerals and a glycemic index in the same neighbourhood as white sugar. If you're managing blood glucose, swapping sugar for jaggery is not a swap.

For the three-way most people actually shortlist, we've done a full breakdown of monk fruit vs stevia vs allulose for Indian homes.

Is allulose approved in India, and where can you buy it?

Yes. Allulose is permitted in India and FSSAI has approved it. Beyond The Sugar's monk fruit and allulose sweetener is an FSSAI-approved product, sold on our own site, Amazon, Flipkart, and through Blinkit and Swiggy Instamart in select cities. The pure ingredient is also sold by a small number of ingredient suppliers.

Availability in India moved fast between 2024 and 2026. Three years ago the only way to get allulose here was to import it. Now it's on quick commerce.

The price is the real barrier. Allulose is almost three times as costly as erythritol. That's an ingredient cost, not a brand markup, and it's why most sweeteners sold as "monk fruit" in India are mostly erythritol. Erythritol is cheap.

Compare per use rather than per pack. To sweeten a cup of chai with a 1:1 blend of monk fruit and allulose, it would cost almost 10-11 rupees. That is a decent number considering how good of a replacement it is to sugar and other alternatives.

What can't allulose do on its own?

Pure allulose has two limits. It's only 70% as sweet as sugar, so you need a third more of it by weight. And it's the single most expensive mainstream sweetener per gram. Used alone, that combination gives you a product that's less sweet than sugar and several times the price.

Which is the whole reason the best sweeteners on the market are blends.

Why monk fruit and allulose is the best sugar alternative available

Monk fruit and allulose solve each other's problems exactly. Allulose supplies the bulk, the browning, the mouthfeel and the moisture, with no cooling effect and no chemical finish. Monk fruit supplies the missing 30% of sweetness at 150 to 200 times sugar's intensity, using a fraction of a gram. Together they get closer to sugar than either does alone.

Work through the alternatives and you can see why this pairing keeps winning.

Monk fruit with erythritol is the most common blend in India. It bulks correctly and it's cheap. It also brings the cooling effect, doesn't brown, and carries the cardiovascular and blood clotting risk from the Nature Medicine work.

Stevia blends are cheaper still and carry the liquorice (bitter/metallic) finish that a lot of people can't get past.

Sucralose and aspartame blends are the cheapest of all. They're synthesised molecules, sucralose degrades under Indian cooking heat, and neither gives you anything sugar-like in texture.

Pure monk fruit is clean and zero-GI, but it's a high-intensity extract with no bulk, so it won't work 1:1 in a recipe.

Monk fruit plus allulose is the only pairing where both halves are zero-glycemic, both are naturally occurring, neither has a cooling effect, and the combination bulks, browns and dissolves the way sugar does. On taste and safety profile together, nothing else on the shelf gets as close.

Where we fit in

Two ingredients go into our Super Sweetener. Monk fruit and allulose. There's no erythritol in it, no maltodextrin, no dextrose, no preservatives and no bulking agent doing the work while the label shouts about monk fruit.

Getting a blend right is harder than listing two ingredients. The ratio decides everything: whether the sweetness peaks too early, whether there's a tail, whether a cake browns, whether chai tastes like chai. We spent a long time on that ratio and we make the product in our own facility rather than buying someone else's blend and putting a label on it.

What we'll claim: no cooling effect, no chemical finish, and behaviour in heat and in cold liquid that's as close to sugar as we've been able to get.

What we won't claim: that it's identical to sugar, or that every palate will agree. Taste is subjective, some of our own customers tell us they'd like it sweeter, and a brand that argues with its own reviews isn't worth trusting on anything else.

So we'd rather you tested it than took our word for it. That's a stronger position for us anyway.

Frequently asked questions

Is allulose safe for diabetics?

Yes, allulose is safe for diabetics. It has a glycemic index of zero and doesn't raise blood sugar or insulin. A 2024 meta-analysis in Metabolism Open covering 6 trials found it lowers post-meal glucose in people with type 2 diabetes. If you take glucose-lowering medication, mention the switch to your clinician.

Does allulose cause weight gain?

No. Allulose contributes roughly 0.2 - 0.4 calories per gram, about a tenth of sugar's 4 calories per gram, because most of it is excreted unchanged rather than metabolised. Replacing sugar with it reduces the calories in a recipe substantially. No sweetener causes weight loss on its own, and we won't tell you otherwise.

How much allulose is too much?

A 2018 trial in Nutrients found healthy adults tolerated up to 0.4g per kilogram of body weight in one sitting and 0.9g per kilogram across a day. For a 70kg adult that's about 28g at once and 63g daily. Beyond that you might have mild stomach issues.

Why is allulose not approved in the EU?

In June 2025 the EFSA panel concluded that the safety of D-allulose couldn't be established. The reason was an incomplete application: the applicant didn't supply enough requested data. EFSA didn't find evidence of harm. A future application with complete data can be reassessed.

Is allulose better than erythritol?

On taste and cooking behaviour, yes. Allulose browns, caramelises and has no cooling effect, while erythritol does none of those. On safety, it doesn't carry the cardiovascular association reported for erythritol in Nature Medicine in 2023. Erythritol is significantly cheaper, which is why it dominates Indian shelves.

Can you bake with allulose?

Yes, and it's the best zero-calorie sweetener for baking. Allulose browns and holds moisture like sugar, but browns faster, so lower the oven by about 15°C and check earlier. It won't crystallise, so meringues and brittle don't work. Cakes, cookies, custards and ice cream all do.

Is allulose the same as monk fruit?

No. Allulose is a rare sugar that provides bulk and about 70% of sugar's sweetness, while monk fruit is a fruit extract whose mogrosides are 150 to 200 times sweeter than sugar with no bulk at all. They're often blended because each covers the other's weakness. Read our complete guide to monk fruit.

Does allulose have an aftertaste?

Allulose has no cooling effect and no chemical finish, which are the two aftertastes people most often report with erythritol and sucralose. Some find pure powder slightly less sweet than expected and read that as a difference in taste. In a monk fruit blend, that gap closes.

Where to go next

If you're managing blood sugar, start with the best sugar substitutes for diabetics in India. If you bake, go to the allulose baking and Indian sweets guide for ratios and temperatures.

And if you want to find out whether a monk fruit and allulose blend tastes as close to sugar as we think it does, the smallest pouch is the cheapest way to settle it. Try the Super Sweetener.